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Kazufumi Ishibashi

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  • Sagamihara, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Optical glass
    • Patent number 4,268,312
    • Issue date May 19, 1981
    • Nippon Kogaku K.K.
    • Kazufumi Ishibashi
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Glasses for eyeglass lenses
    • Patent number 4,252,567
    • Issue date Feb 24, 1981
    • Nippon Kogaku K.K.
    • Kazufumi Ishibashi
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Optical glass
    • Patent number 4,193,807
    • Issue date Mar 18, 1980
    • Nippon Kogaku K.K.
    • Kazufumi Ishibashi
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Optical glass
    • Patent number 4,166,746
    • Issue date Sep 4, 1979
    • Nippon Kogaku K.K.
    • Kazufumi Ishibashi
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Optical glass
    • Patent number 4,118,238
    • Issue date Oct 3, 1978
    • Nippon Kogaku K.K.
    • Kazufumi Ishibashi
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Optical glass
    • Patent number 4,115,131
    • Issue date Sep 19, 1978
    • Nippon Kogaku K.K.
    • Kazufumi Ishibashi
    • C03 - GLASS MINERAL OR SLAG WOOL